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  <title>Get the number of fields in a result set</title>

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</div><hr /><div id="function.ibase-num-fields" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">ibase_num_fields</h1>
  <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">ibase_num_fields</span> &mdash; <span class="dc-title">Get the number of fields in a result set</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.ibase-num-fields-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">int</span> <span class="methodname"><strong>ibase_num_fields</strong></span>
    ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result_id</code></span>
   )</div>

  <p class="para rdfs-comment">
   Get the number of fields in a result set.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.ibase-num-fields-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">result_id</code></em></dt>

     <dd>

      <p class="para">
       An InterBase result identifier.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.ibase-num-fields-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns the number of fields as an integer.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.ibase-num-fields-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-1085">
    <p><strong>Example #1 <span class="function"><strong>ibase_num_fields()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$rs&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">ibase_query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT&nbsp;*&nbsp;FROM&nbsp;tablename"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$coln&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">ibase_num_fields</span><span style="color: #007700">(</span><span style="color: #0000BB">$rs</span><span style="color: #007700">);<br />for&nbsp;(</span><span style="color: #0000BB">$i&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">;&nbsp;</span><span style="color: #0000BB">$i&nbsp;</span><span style="color: #007700">&lt;&nbsp;</span><span style="color: #0000BB">$coln</span><span style="color: #007700">;&nbsp;</span><span style="color: #0000BB">$i</span><span style="color: #007700">++)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$col_info&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">ibase_field_info</span><span style="color: #007700">(</span><span style="color: #0000BB">$rs</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$i</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"name:&nbsp;"&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$col_info</span><span style="color: #007700">[</span><span style="color: #DD0000">'name'</span><span style="color: #007700">]&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"alias:&nbsp;"&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$col_info</span><span style="color: #007700">[</span><span style="color: #DD0000">'alias'</span><span style="color: #007700">]&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"relation:&nbsp;"&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$col_info</span><span style="color: #007700">[</span><span style="color: #DD0000">'relation'</span><span style="color: #007700">]&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"length:&nbsp;"&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$col_info</span><span style="color: #007700">[</span><span style="color: #DD0000">'length'</span><span style="color: #007700">]&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"type:&nbsp;"&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$col_info</span><span style="color: #007700">[</span><span style="color: #DD0000">'type'</span><span style="color: #007700">]&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>   
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.ibase-num-fields-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.ibase-field-info.html" class="function" rel="rdfs-seeAlso">ibase_field_info()</a> - Get information about a field</span></li>
   </ul>
  </p>
 </div>


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